Analysis
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max time kernel
156s -
max time network
173s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
28-11-2022 17:38
Behavioral task
behavioral1
Sample
92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe
Resource
win10v2004-20220812-en
General
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Target
92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe
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Size
1012KB
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MD5
98d0000c28ed30d94374762113976b75
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SHA1
60ceb509382e6309855d32cfcc99b34d782bd083
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SHA256
92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f
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SHA512
c1f3586a7b79c74de0b3ea7eb6d13c925d98655491ce043a9db56feef80c9b40e29f86b9e8d3e94328fc6c51722dc91e4e93b37beb15be97a4bbe8842f7ff1fa
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SSDEEP
24576:2vzgO5yKsUaSuErRWNoEb0RkxFdtBNN57:zO5jGErsNrcc75
Malware Config
Signatures
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ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
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ISR Stealer payload 4 IoCs
Processes:
resource yara_rule behavioral2/memory/1116-135-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/1116-146-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/1116-148-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/1116-155-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer -
NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule behavioral2/memory/220-153-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView behavioral2/memory/220-154-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView -
Nirsoft 2 IoCs
Processes:
resource yara_rule behavioral2/memory/220-153-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft behavioral2/memory/220-154-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft -
Processes:
resource yara_rule behavioral2/memory/3908-141-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/3908-143-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/3908-144-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/3908-145-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/220-150-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/220-152-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/220-153-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/220-154-0x0000000000400000-0x000000000041F000-memory.dmp upx -
Uses the VBS compiler for execution 1 TTPs
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
Processes:
vbc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Suspicious use of SetThreadContext 3 IoCs
Processes:
92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exevbc.exedescription pid process target process PID 860 set thread context of 1116 860 92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe vbc.exe PID 1116 set thread context of 3908 1116 vbc.exe vbc.exe PID 1116 set thread context of 220 1116 vbc.exe vbc.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exedescription pid process Token: SeDebugPrivilege 860 92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
vbc.exepid process 1116 vbc.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exevbc.exedescription pid process target process PID 860 wrote to memory of 1116 860 92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe vbc.exe PID 860 wrote to memory of 1116 860 92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe vbc.exe PID 860 wrote to memory of 1116 860 92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe vbc.exe PID 860 wrote to memory of 1116 860 92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe vbc.exe PID 860 wrote to memory of 1116 860 92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe vbc.exe PID 860 wrote to memory of 1116 860 92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe vbc.exe PID 860 wrote to memory of 1116 860 92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe vbc.exe PID 1116 wrote to memory of 3908 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 3908 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 3908 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 3908 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 3908 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 3908 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 3908 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 3908 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 220 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 220 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 220 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 220 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 220 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 220 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 220 1116 vbc.exe vbc.exe PID 1116 wrote to memory of 220 1116 vbc.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe"C:\Users\Admin\AppData\Local\Temp\92810bfa22f1d71451860ab5ca81931a9e77218e89020e207438e19aa387840f.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe/scomma "C:\Users\Admin\AppData\Local\Temp\zYV7XPb60y.ini"3⤵
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe/scomma "C:\Users\Admin\AppData\Local\Temp\2tcS5H7Hxn.ini"3⤵
- Accesses Microsoft Outlook accounts
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\zYV7XPb60y.iniFilesize
5B
MD5d1ea279fb5559c020a1b4137dc4de237
SHA1db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3
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memory/220-154-0x0000000000400000-0x000000000041F000-memory.dmpFilesize
124KB
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memory/220-153-0x0000000000400000-0x000000000041F000-memory.dmpFilesize
124KB
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memory/220-152-0x0000000000400000-0x000000000041F000-memory.dmpFilesize
124KB
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memory/220-150-0x0000000000400000-0x000000000041F000-memory.dmpFilesize
124KB
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memory/220-149-0x0000000000000000-mapping.dmp
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memory/860-133-0x0000000075590000-0x0000000075B41000-memory.dmpFilesize
5.7MB
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memory/860-139-0x0000000075590000-0x0000000075B41000-memory.dmpFilesize
5.7MB
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memory/860-132-0x0000000075590000-0x0000000075B41000-memory.dmpFilesize
5.7MB
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memory/1116-148-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/1116-146-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/1116-135-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/1116-134-0x0000000000000000-mapping.dmp
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memory/1116-155-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/3908-145-0x0000000000400000-0x0000000000453000-memory.dmpFilesize
332KB
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memory/3908-144-0x0000000000400000-0x0000000000453000-memory.dmpFilesize
332KB
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memory/3908-143-0x0000000000400000-0x0000000000453000-memory.dmpFilesize
332KB
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memory/3908-141-0x0000000000400000-0x0000000000453000-memory.dmpFilesize
332KB
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memory/3908-140-0x0000000000000000-mapping.dmp